Threshing-machine.



'11. MAAS. THRESHING MACHINE.

APPLICATION FILED DEC. 17, 1910.

Patented Apr. 1, 1913.

UNITED STATES PATENrorrr HENRY Mans, or LE SUEUR, MINNESOTA.

Specification of Letters Patent.

THRESHING-MACHINE.

To all whom it may concern:

Be it known that I, HENRY MAAs, a citizen of the United States, residing 'at Le Sueur, in the county of Lesueur and State of Minnesota, have invented certain new and useful Improvements in Threshing-Machines, of which the following is a specification.

My invention has relation to new and useful improvements in grain conveyer attachments for threshing machines.

The main object of my invention is to produce a device of this naturethat will convey the unthreshed grain from the elevator over the cylinder and drop it into the machine to be retbreshed. The object in conveying the grain back over the cylinder in this manner is to scatter itevenly along the cylinder thereby preventing clogging and doing away with the dustwhi'ch arises from the present method of conveying the unthreshed grain from the elevator to the cylinder,.

which ordinarily consists of a shufiie box which is unsatisfactory for the reasons heretofore stated.

Another feature of my invention is that I may be able to regulate the flow of unthreshed grain over the cylinder by means of a slide shutter by which the longitudinal opening of. the under side of the screw conveyer may be varied. Thus by this arrangement I am able to scatter the. grain evenly over the cylinder as before stated, so that the sieves in the rear do not get clogged in any one place.

-With the foregoing and other objects. in view my invention consists in the novel construction, combination and arrangement of parts as are described in this specification, illustrated in the accompanying drawings forming a part thereof and particularly pointed out in the appended claims.

- Referring to the drawings [F igure 1 is a side elevation of my grain conveyer attached in position above the cylinder of a threshing machine, that part of the threshing machine which is illustrated and part ofthe grain conveyer being shown in vertical section. Fig. 2 is a longitudinal. vertical, sectional view through the cylinder and concave portion of a threshing machine and my improved screw conveyer attached in position above said cylinder, taken on the line 2- 2 of Fig.1, the means of convening the ain into-said screw conveyer being alsoustrated. Fig. 3 is a. horizontal, sectional rection of the arrow.-

Referring more particularly to the drawing, in which like numerals designate like parts throughout, my invention is described as follows: The threshing machine is provided with the usual cylinder 1 received by the usual concave 2. Cut in the upper wall 3 of the frame of the thresher and directly above the cylinder 1 is a transverse slot or opening a which corresponds to and registers with the longitudinal slot 5 provided in the under wall of the screw conveyer 6.

The unthreshed grain is conveyed into the screw conveyer 6 through the receiving spout 7 from the elevator by any suitable means such as illustrated in Fig. 2. The grain after passing into the screw conveyer 6 gradually passes through the slots 4 and 5 and falls directly upon said cylinder 1. Whatever grain that is left when it reaches the end of the screw conveyer passes through sprocket wheel 13 is keyed to one end of said spindle 12 Without the adjacent end wall of the tubular body portion 11, power being transmitted to said sprocket from the spindle of said cylinder 1 by means of a sprocket chain 14. A door 15 is provided in the upper wall of the tubular body portion 11, which door swings upon the hinges 16. Said door is held in closed position by means of the catch 17.

Although I have specifically described the construction, combination and arrangement of the several parts of my invention, yet I do not confine myself to such construction, combination and arrangement of parts but reserve and may exercise the right to make such changes therein as do not depart from .the spirit of m invention or the scope of the. ap ended c aim's.

Having described my invention what I Patented Apral, 1913. Application filed December 17, 1910. Serial No. 597,857.

claim as new and desire to secure by Letters the lower wall thereof, means to regulate the Patent, is: width of said registering slots comprising 1; In a device of the class described, a a'cut off slide, said slide interposed between screw conveyer consisting of a tubular body the tubular body portion of thescrew corn 5 portion, said body ortion having a longiveyer and the u per wall of the thresher and tudinal slot provi ed in the under well being slidably held in position, and means thereof, an inlet spout provided at one end to t-ransmit power from the spindle of the of the body port-ion in the upper wall therecylinder to the spindle of the screw of the of, an outlet spout provided at the oppositev screw conveyer.

end to the inlet spout in the under wall of 3. In a device of the kind described comthe tubular body portion, a screw conveyer prising a screw conveyer consisting of a within the body portion and rotatably held tubular body portion and a screw conveyor therein, the thres'er to which the conveyer' rotatably held therein, a longitudinal slot is attached having a transverse slot in its provided in the under wall of the tubular upper wall, directly above the cylinder of bodyportion, an inlet spout protruding upsaid thresher, said last-mentioned slot regisward at one end of the tubular body portering with the slot in the tubular body por tion into which unthreshed grain is fed, and tion and -means to vary the width of said an outlet spout at the opposite end thereof, slots, substantially as shown. the inlet spout protruding from the upper 2. In a device of the kind described comwall while the outlet spout is provided in prising a screw conveyer consisting of a the lower wall of the body portion, a door tubular body portion and a screw rotatably provided in the upper wall of the body porheld therein, a cylinder therewith, said cyltion with means to secure said door in closed inder mounted for rotation in the frameposition comprising a latch, and means to work of a thresher, the under wall of the regulate the width of the longitudinal slot tubular body portion having a longitudinal in said bodyportion, said means comprising slot in its under wall, which corresponds to. a slide.

a transverse slot inthe upper wall of the In testimony whereof I aflix my signature,

thresher directly above said cylinder, an inin presence of two witnesses.

let spout at one end of the. tubular body HENRY MAAS.

portion and an outlet spout at the opposite Witnesses end thereof, the inlet s out being in the WV. V. KANE, upper-wall and the out et spout being in -CONNAR J. THEIST.

. Copies of thispatent may be obtained for five cents each, by addressing the Commissioner of Patents- Washington, D. C. 

